<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <style>
    body {
      margin: 40px;
    }

    .wrapper {
      display: grid;
      grid-gap: 10px;
      grid-template-columns: 100px 100px 100px;
      background-color: #fff;
      color: #444;
    }

    .box {
      background-color: #444;
      color: #fff;
      border-radius: 5px;
      padding: 20px;
      font-size: 150%;
    }

    .a {
      background-color: pink;
      grid-area: 1 / 1 / 2 / 3;
    }
    .b {
      background-color: orange;
      grid-area: 1 / 3 / 4 / 4;
    }
  </style>
</head>

<body>
<div class="wrapper">
  <div class="box a">A</div>
  <div class="box b">B</div>
  <div class="box c">C</div>
  <div class="box d">D</div>
</div>
</body>

</html>
